r5s77631ay266bgv Renesas Electronics Corporation., r5s77631ay266bgv Datasheet - Page 711

• Manufacturer Part Number: r5s77631ay266bgv
• Description: Renesas 32-bit Risc Microcomputer Superhtm Risc Engine Family Sh-4a Series
• Manufacturer: Renesas Electronics Corporation.

The reset and watchdog timer (WDT) control circuit comprises the reset control unit and WDT
control unit which control the power-on reset sequence and a reset for on-chip peripheral modules
and external devices.
The WDT is a one-channel timer which can be used as the watchdog timer or interval timer.
17.1
• WDT monitors a system crash using a timer counting at specified intervals.
• WDT supports the watchdog timer mode and the interval timer mode.
• WDT generates an internal reset when a WDT overflow occurs in watchdog timer mode.
• WDT generates the interval timer interrupt when counter overflow occurs in interval timer
• The maximum time until the watchdog timer overflows is approximately 21 seconds (when the
• Writing to WDT-related registers is not normally allowed. A specified code in the upper bits of
A power-on reset or a manual reset can be selectable.
mode.
peripheral clock Pck0 is 50 MHz).
write data enables writing to the registers.
Features
Section 17 Watchdog Timer and Reset (WDT)
Section 17 Watchdog Timer and Reset (WDT)
Rev. 1.00 Oct. 01, 2007 Page 645 of 1956
REJ09B0256-0100